Julius may refer to:

• Julius (name), a masculine given name and surname (includes a list of people with the name)
• Julius (nomen), the name of a Roman family (includes a list of Ancient Romans with the name)
  • Julius Caesar (100–44 BC), Roman military and political leader and one of the most influential men of classical antiquity
• Julius (judge royal) (fl. before 1135), noble in the Kingdom of Hungary
• Julius, Count of Lippe-Biesterfeld (1812–1884), German noble
• Julius, Duke of Brunswick-Lüneburg (1528–1589), German noble

• Julius (Everybody Hates Chris), a character from the American sitcom
• "Julius" (song), by Phish, 1994

• Julius (chimpanzee), a chimpanzee at Kristiansand Zoo and Amusement Park in Norway
• Julius (month), the month of the ancient Roman calendar originally called Quintilis and renamed for Julius Caesar
• Julius (restaurant), a tavern in Greenwich Village, New York City
• Julius (software), an open-source speech recognition decoder

• Julius Baer Group, a Swiss bank
• Julius Caesar (disambiguation)
• Juliusz, a given name
• Orange Julius, an American chain of fruit drink beverage stores, and eponymous beverage